Coolant capacity for the John Deere 6125R is 5.83 gal (22.1 L). This is the main refill figure for a drain, flush or coolant change.
Coolant capacity5.83 gal (22.1 L)Cooling system refill amount
John Deere 6125R Coolant Capacity Specs
Coolant capacity
5.83 gal (22.1 L)
Engine horsepower
125 hp
Engine displacement
276 cu in (4.52 L)
John Deere 6125R Coolant Capacity Guide
Coolant capacity guide
This model
5.83 gal
Class low
6 gal
Class typical
9.5 gal
Class high
14 gal
Compared with a broad 6 series guide, not the full tractor dataset.
John Deere 6125R Coolant Service Notes
Coolant capacity note
The John Deere 6125R coolant capacity is 5.83 gal (22.1 L). Treat it as a cooling-system amount, not a radiator-only top-up amount
Coolant service note
The John Deere 6125R should be filled by capacity first, then verified by the actual level marks after the engine cools
Refill check
After a drain and refill on the John Deere 6125R, the cooling system can burp air. Recheck the level after the first warm-up and cool-down cycle
Engine context
For comparison, the John Deere 6125R engine details listed here are engine horsepower 125 hp and engine displacement 276 cu in (4.52 L). The coolant capacity remains the service number to use for refilling
John Deere 6125R Coolant Capacity FAQ
How much coolant is needed for a John Deere 6125R coolant change?
The cooling system capacity for the John Deere 6125R is 5.83 gal (22.1 L). This is the main refill figure for a drain, flush or coolant change
Should I bleed air after changing coolant in the John Deere 6125R?
Fill the John Deere 6125R slowly, run it with the heater/thermostat cycle where applicable, let it cool and check the level again. That helps catch trapped air
When should I flush the John Deere 6125R cooling system?
Flush the John Deere 6125R cooling system if the coolant is dirty, contaminated, badly diluted or overdue for service. A simple top-up does not fix old coolant chemistry
Official information note
Mistakes do happen. Tractor coolant capacity and coolant type can change by year, market, engine, radiator setup and service procedure. Check the operator manual, service manual and official deere.com website before draining, flushing or refilling the cooling system.
